Coleman inverter generators are reliable, easy to move, quiet, and are an excellent source of continuous power for camping and emergencies. The 3500i comes with a 1.5gallon tank that will provide 3.1 hours of continuous run time at 63dB from 23ft. They are compatible with sensitive electronics and come equipped with overload protection. The maximum power output is 3500w with running power of 3000w. The outlets include two 120V AC, and one 12V 4A DC. The displacement is 149.5cc gas/oil engine.